20200206093000.0 2300-861X Transport Problems. Transport Problems (Online) Transport Problems (Online) Transport Problems. 1896-0596 Poland 2300-861X http://transportproblems.polsl.pl/en/default.aspx 2300-861X portico Portico 2015/2018 2024-03-26 Preserved : 2015: 10, 2016: 11, 2017: 12, 2018: 13 Preserved : 2015: 10(1-4, SE), 2016: 11(1-4), 2017: 12(1-4, SE), 2018: 13(1-2) Preserved Exeley Inc. Transport Problems 2300-861X 1896-0596 2019/2021 2024-03-26 Preserved : 2019: 14, 2020: 15, 2021: 16 Preserved : 2019: 14(1-2, 4), 2020: 15(1-3, 4, Part 1, 4, Part 2), 2021: 16(1-4) Preserved Exeley Inc. Transport Problems 2300-861X 1896-0596 2300-861X